ELI5: Explain Like I'm 5

Herd behavior

Herd behavior is when a group of people or animals act together in the same way. It's like when you see a lot of sheep walking in a line together. They are all doing the same thing, like following their leader, and doing what the other sheep are doing. It's kind of like Peer Pressure, because you don't want to be left out or be the only one not doing what the other members of your group are doing.